Spring construction.



No; 879,334. 1 PATENTED FEB. 18, 1908. W. R. SMITH.

SPRING CONSTRUCTION.

APPLICATION FILED SEPT. 26, 1907.

g. 97mm WATSON B. SMITH, OF JACKSON, MICHIGAN.

SPRING CONSTRUCTION.

Specification of Letters Patent.

Patented Feb. is, 1908.

Application filed September 26 1907- Serial No. 394:.755.

To all whom it may concern:

Be it known that I, VVATsoN B. SMITH, citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Spring Constructions, of which the following is a specification.

This invention relates to spring constructions;

One object of the invention is to provide a spring construction provided with supporting wires having bends constructed to. conform to theshape of the lowermost convolution of the springs embodied in the construction.

Another object of the invention resides in the provision of a simple, inexpensive, du-

rable and efficient spring construction embodying such characteristics that the springs will have a firm and substantial mounting upon the supporting wires.

A still further object of the invention is to provide a spring construction whose elements are soorganized in the formation of the construction that the makers of the same may ship them to the users in such condition that the latter may readily mount the construction in their frames.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and particularly pointed out in the appended claims, it being understood that changes may be made in the form, proportion, size and minor details without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings: Figure l is a longitudinal sectional view of a spring construction embodying my invention. Fig. 2 is an inverted plan view; and Fig. 3 is a detailed view of one of the fastening clips for connecting the sprin s to the supporting wires.

Re 'erring now more particularlyto the accompanying drawings,the reference character 1 indicates a wood or other frame to which are secured pairs of supporting wires 2. These supporting Wires may be secured to the frame in any suitable manner, but for purpose of illustration it will be seen that the supporting wires are provided at each end with a hook portion 3 whose bills 4 are designed to be driven into the body of the frame 1, the hooks 3 being so formed and disposed as to provide for a dependency of the supporting wires within the frame.

The supporting wires of each pair are provided with oppositely disposed bends 5 and over these oppositely disposed bends of each pair of supporting wires I mount a spring 6 of any suitable type, the bends conforming to the shape of that portion of the lowermost convolution of the spring resting upon them. It will be seen that the lowermost convolutions of the springs contact with the bends throughout the length of the latter and that the respective bends are substantially in vertical alinement with the lowermost convolutions of the corresponding springs.

By virtue of the bends conforming in shape to the lowermost coils of the springs and the former being in substantially vertical planes with the latter it is impossible in the use of the construction, for the intermediate or inside coils of the springs to strike against the bends of the supporting wires. Moreover, these peculiar bends of the supporting Wires are of such nature that a very simple machine is required to make them.

The springs are secured to the supporting wires 2 at said bends 5 by separate fastenings 7, each of which have a hook 8 at each end and an intermediate hook 9, the intermediate hook 9 engaging the supporting wires and the lowermost convolution of the spring preferably at the intermediate point of said bends 5 with the end hooks 8 disposed to engage the same elements preferably near the point of supporting wires where the bends 5 begin to take form. The result of this peculiar mounting and fastening of the springs provides for such strength of connection as will accommodate the usual pressure brought to bear upon constructions of the present type without causing a breakage of the connection of any of the parts forming the connection. Furthermore, this peculiar mounting and connection of the springs positively prevents the s rings from sliding in any direction upon the supporting wires.

I am aware that it is old in the art to provide supporting wires with bends, but these bends are usually so sharp that it is necessary to employ a low carbon wire to permit of the formation of the bends, for the reason that a hi 11 carbon wire would be too brittle and won (1 not permit the formation of strong and substantial bends. The result is that a large per cent. of waste is caused by tion.

the breaking of these bars provided with decided bends. Further, the s rings are supported over bends only partia ly and the latter do not conform in shape to the springs, and if the bends are not strong and substan tial, the consequent Weak support for the springs will break in the use of the construc- In the present instance, the bends in the supporting wires conforming in shape to that portion of the lowermost convolution of the spring resting upon them, there is no possibility of the intermediate coils of the springs striking against the supporting wires and by use of my peculiar form of bend in the supporting wires in connection with separate fastenings there is absolutely no possibility of the springs sliding in either direction.

My construction provides a rigid connection between the springs and supporting Wires. There is practically no waste in the manufacture of my improved supporting bars as the fastenings may be fastened thereto in one factory rendering it possible for purchasers upon receiving them in their assembled conditions to readily attach the construction to its frame. However, the most important feature of my invention lies in the fact that the supporting wires have bends conforming to the bottom of the springs and the springs and wires connected together to prevent any kind of movement of the lowermost convolutions of the springs with relation to the supporting wires.

What is claimed is:

1. In a spring construction, a supporting wire having a bend therein, and a spring having its lowermost convolution mounted upon the supportin wire over said bend and contactin with t 1e bend throughout the length of the atter, said bend lying substantially in vertical alinement with the lowermost convolution of the spring.

2. In a spring construction, supporting wires arranged in pairs, the supporting wires of each pair having oppositely disposed bends, springs mounted upon the supporting wires over said bends and contactwith the bends throughout the length of t he latter, said bends lying substantially in vertical planes with the lowermost convolutions of the corresponding springs, and means for fastening the springs to the supporting wires over said bends.

In testimony whereof I affix my signature, in presence of two witnesses.

WVATSON R. SMITH.

Witnesses:

CLAUDE S. LARNED, G. A. FRANZ. 

